What is a conflict Meg Murry faces in A Wrinkle in Time that shows who she is as a person?

At the
beginning of  , Meg Murry is not at all confident of her abilities in
general. She does not feel intelligent; her teachers make it clear they don't think she is very
bright. Meg compares her looks to her mother's, and is not happy in that area, either. She
knows, though, that she has a special link to her younger brother, Charles Wallace. Their
father, a physicist, is missing, and although they and their...